Friction-clutch.



PATBNTBD JAN; s, 1907. J. W. BROWN.. PRICTION CLUTCH. APPLIOTIONIILEDAUG. 24, 1906..

l 2 SHEETS-SHEET 1.

FigM.

1w.- Nafmls PETER; co., WASH/msnm, o. c.

No. 840,687. PATENTED JAN. 8, 1907.

` J. W. BROWN.

FRICTION CLUTCH.

APPLICATION FILED AUG.24. 1906..v

Z SHEETSSHEET 2.

BT 444/1 @fg/wt K y f v A'I'TORNET.

Which engages, by means of a lug f', with the sleeve D by entering theslot d, whereby the sleeve D may be moved longitudinally of the shaft,so that the friction members E can be forced against the friction-flangeb4 and caused to tightly grip the same or can be permitted to separate.

The operation of the apparatus is as follows: Assuming the shaft A to berotating and the pulley B remaining stationary thereon, the two annularclutch members E are being dragged around by the clutch-hub C and arerotating out of contact with the radially-projecting flange b4. Assumingnow that 1t becomes desirable to clamp the clutch, the leverF beingmoved so as to slide the sleeve D toward the rightfF ig. 2, the links(Z7 will be pushed outwardly by the links dg'. This action will causeone or the other, or both, of the annularclutch members E to approachthe radially-projecting flange b4; but whatever the action with respectto said flange said clutch members will be caused to approach eachother. Now if one of said annular clutch members should contact with theradially-projecting flange b4 the other is still free to move and willcontinue its movement until said movement is arrested by said Imemberimpinging upon said flange b4.

What I claim is` l. The combination with a shaft of a pulley rotatableconcentrically 'therewith but independently thereof, said pulley beingprovided with a radially-projecting flange, a clutch-hub ri idly securedto said shaft, two annular clutc members directly secured to and adaptedto be rotated by said clutch-hub and located one on each side of saidflange, levers connected to said annular clutch members and extendingtoward said shaft, ful- Crum-bars, each of said bars uniting a leverconnected with one of the annular clutch members with a lever connectedwith the other of said annular clutch members, one lever of each pairthus united being secured to said clutch-hub, and means for operatingthe other levers.

2. The combination with a shaft of a pulley rotatable concentricallytherewith but independently thereof, said pulley being provided with aradially-projecting flange, a clutch-hub rigidly secured to said shaft,two annular clutch members directly secured to and adapted to be rotatedby said clutch-hub and located one on each side of said flange, meansfor normally separating said annular clutchmembers, levers connected tosaid annular lclutch members and extending toward said' shaft,fulc'rum-bars, each of said bars uniting a lever connected with one ofthe annular clutch members with a lever connected with the other of saidannular clutch members, one lever of each pair thus united being securedto said clutch-hub, and means for operating the other levers..

i clutch members with 3. The combination with a shaft of a pulleyrotatable concentrically therewith butindependently thereof, said pulleybeing provided with a radially-projecting flange, a clutch-hub rigidlysecured to said shaft, two annular clutch members directly secured toand adapted to be rotated by said clutch-hub and located one on eachside of said flange, levers connected to said annular clutch members andextending toward said shaft, fulcrum-bars, each of said bars uniting alever connected with one of the annular clutch members with a leverconnected with the other of said annular clutch members, one lever ofeach pair thus united being secured to said clutch-hub, toggle members,one for each of the other levers, and means for operating said togglemembers.

l. The combination with a shaft of a pulley rotatable concentricallytherewith but independently thereof, said pulley being provided with a`radially-projecting flange, a clutch-hub rigidly secured to said shaft,two annular clutch members directly secured to and adapted to be rotatedby said clutch-hub and located one on each side of said flange, each ofsaid annular clutch members being movable toward or away from saidradiallyprojecting flange independently of the other, and means toengage said annular clutch members with said flange.

5. The combination with a shaft of a pulley rotatable concentricallytherewith butindependently thereof, said pulley being provided with aradially-projecting flange, a clutch-hub rigidly secured to said shaft,two annular clutch members directly secured to and adapted to be rotatedby said clutch-hub and located one on each side of said flange, leversconnected to said annular clutch members, fulcrum-bars, each of saidbars uniting a lever connected with one of the annular clutch memberswith a lever connected with the other of said annular clutch members,one lever of each pair thus united being connected with said clutch-hubby a link, toggle members, one for each of the other levers, a sleeve towhich said toggle members are connected, and means for moving saidsleeve longitudinally of said shaft.

6. The combination with a shaft of a pulley rotatable concentricallytherewith but independently thereof, said pulley being provided with aradially-projecting flange, a clutch-hub rigidly secured to said shaft,said hub being extended outwardly from said shaft forming arms, twoannular clutch members directly secured to and adapted to be rotated bythe arms of said clutch-hub and located one on each side of said flange,

levers connected to each of said annular clutch members and extendingtoward said shaft, fulcrum-bars, each of said bars uniting a leverconnected with one of the annular a lever connected with IOO the otherof said annular clutch members, one lever Vof each pair thus unitedbeing secured by means of a link to said clutch-hub7 each ofthe otherlevers being provided With a toggle member, a sleeve movable length-Wise of said shaft, links connecting said toggle members With saidsleeve, means for moving said sleeve lengthwise of said shaft,

In testimony whereof I affix mv signature in the presence of twoWitnesses.

JOHN W. BROWN. Witnesses:

G. F. DE WEIN, FRANK E. BENNETT.

